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Science 13 December 1968:
Vol. 162. no. 3859, pp. 1288 - 1289
DOI: 10.1126/science.162.3859.1288
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Articles

Conversion of Mesophilic to Psychrophilic Bacteria

Ronald H. Olsen 1 and Eleanor S. Metcalf 1

1 Department of Microbiology, University of Michigan, Ann Arbor

The minimum temperature of growth of the mesophilic bacterium Pseudomonas aeruginosa has been significantly lowered from approximately 11° to 0°C. This shift in the minimum temperature of growth was accompanied by a corresponding decrease in the maximum temperature of growth. Transfer of this genetic characteristic by a transducing phage grown on a psychrophile or by ultraviolet mutagenesis was used to accomplish these shifts in range of growth temperature.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)